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Vitamin D and COVID-19: Video and PDF by Dr. Grant (includes recommendations)- Nov 25, 2020

 Download his PowerPoint from VitaminDWiki
 Download his PDF from VitaminDWiki


  • Observational studies of COVID-19 and 25(OH)D
  • 2 “Quasi-experimental” studies of vitamin D supplementation of COVID-19 patients
  • 2 RCTs of vitamin D treatment of COVID-19
  • Mechanisms of vitamin D in reducing COVID-19 risk
  • SARS-CoV-2 seropositivity with respect to 25(OH)D
  • Racial disparities of seropositivity related to 25(OH)D
  • Age effects on COVID-19 deaths
  • Seasonality of viral infections that peak in winter
  • Recommendations for vitamin D re COVID-19
  • For more information

3 of the slides


  • For health care workers dealing with COVID-19 patients;
  • For those at greatest risk of COVID-19
    (elderly, obese, chronic diseases, lung diseases, high social contact);
  • For those with recently diagnosed COVID-19 or SARS-CoV-2 seropositivity:
  • Consider taking 100,000-200,000 IU vitamin D3 within a week to rapidly raise 25(OH)D concentration,
    followed by 4000 or 5000 IU/d or up to 50,000 IU/week.
  • No adverse effects of high-dose vitamin D supplementation have been found for COVID-19 patients.

  • ROCHESTER, Minn. — Over 900 Mayo Clinic staff have contracted COVID-19 in the past two weeks, according to a Tuesday briefing by Dr. Amy Williams, dean of clinical practice.
  • Williams said that 93 percent of staff who have contracted the virus did so in the community, and that the majority of those who contracted the virus at work did so while eating in a break room with a mask off.
  • “It shows you how easy it is to get COVID-19 in the Midwest,” said Williams, during an afternoon press call. “Our staff are being infected mostly due to community spread, and this impacts our ability to care for patients. We need everyone in the communities we serve to do their part to limit the spread of COVID-19.”

Low Temperature and Low UV Indexes Correlated
with Peaks of Influenza Virus Activity in Northern Europe during 2010⁻2018


Implications: Influenza rates are reduced in winter at high latitudes due to

  • lower temperature,
  • UV dose
  • humidity

giving rise to increased viability of the virus outside the human body.

See also VitaminDWiki

COVID-19 treated by Vitamin D - studies, reports, videos
As of March 31, 2024, the VitaminDWiki COVID page had:  trial results,   meta-analyses and reviews,   Mortality studies   see related:   Governments,   HealthProblems,   Hospitals,  Dark Skins,   All 26 COVID risk factors are associated with low Vit D,   Fight COVID-19 with 50K Vit D weekly   Vaccines   Take lots of Vitamin D at first signs of COVID   166 COVID Clinical Trials using Vitamin D (Aug 2023)   Prevent a COVID death: 9 dollars of Vitamin D or 900,000 dollars of vaccine - Aug 2023
5 most-recently changed Virus entries

37 studies By Dr. Grant in VitaminDWiki as of April 2022

Created by admin. Last Modification: Tuesday April 12, 2022 17:52:54 GMT-0000 by admin. (Version 12)

Attached files

ID Name Comment Uploaded Size Downloads
14619 Grant 21.jpg admin 26 Nov, 2020 64.04 Kb 431
14613 2011-VuMedi Vitamin D and COVID-19 Nov 25. 2020_compressed.pdf admin 26 Nov, 2020 774.57 Kb 323
14612 2011-VuMedi Vitamin D and COVID-19 Nov 25. 2020.pptx admin 26 Nov, 2020 1.98 Mb 299